89388431 has 16 divisors (see below), whose sum is σ = 103692960. Its totient is φ = 76154880.

The previous prime is 89388401. The next prime is 89388457. The reversal of 89388431 is 13488398.

It is a cyclic number.

It is not a de Polignac number, because 89388431 - 2¹⁴ = 89372047 is a prime.

It is a super-2 number, since 2×89388431² = 15980583193283522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89388401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49415 + ... + 51191.

It is an arithmetic number, because the mean of its divisors is an integer number (6480810).

Almost surely, 2^89388431 is an apocalyptic number.

89388431 is a deficient number, since it is larger than the sum of its proper divisors (14304529).

89388431 is a wasteful number, since it uses less digits than its factorization.

89388431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2074.

The product of its digits is 165888, while the sum is 44.

The square root of 89388431 is about 9454.5455205420. The cubic root of 89388431 is about 447.1230970212.

The spelling of 89388431 in words is "eighty-nine million, three hundred eighty-eight thousand, four hundred thirty-one".